Demountable-rim tool



Oct. 30 1923.

J. B. STROUD DEMOUNTABLE R IN! TOOL Filed Nov. 20 1922 JOHN BELL STROUD, or PASS CHRISTIAN, MISSISSIPPI.

DEMOUNTABLE-RIM TOOL.

Application filed November 20, 1922. Serial No. 602,167. 8

Be it known that 1, JOHN B. S'rnonn, a of the straight side type, thejoint being repcitizen of the United States, and a. resident resented by 11 on Fig. 1. My device as of Pass Christian, in the county of Harrishown comprises two clamping members, 12 j son and State of Mississippi, have invented and 13, each consisting of side plates held a certain new and useful Improvement in together by bolt 15 and lever nut 16, and Demountable-Rim Tools, of which the folbolt 15 and lever 16. The lower ends of lowing is a specification. said plates being spread apart and bent at My invention relates to improvements in various angles to lit a straight side rim of is breaking the joint of split rims previous to the ordinary type and forming gripping removing the tires therefrom and holding flanges. V v the same in a contracted position while the Extending laterally from jaws of clamp tire is removed and replaced. 12 (the clamps which in practice are placed In removing a tire from its rim it is very near joint 11 of the rim) are two right angu- 15 diiiicult to part the ends of rim so that one lar arms apertured at their respective ends end of rim will rise above the other to be to receive bolt 19, Fig. 1, said arms project contracted and still more difficult to force over said joint 11 sufficient for the free movethe ends back into lock after tire has been ment of cam 18, (which pivots on bolt 19 replaced thereon. between ends of said arms) without contact 20 The object of my invention is to provide with end of rim 10 in the operation of conmeans for overcoming this difficulty which is tracting and expanding said rim. Said cam simple and inexpensive in construction. is provided with a slot vertical wit-h cam Vith this and other objects in view my inlever, Fig. 1. Said cam carries on its lower vention consists of a perforated plate atface a projecting tooth 22, adapted to en- 25 tachable to and detachable from a split rim, gage perforation of plate 20, Figs. 1, 2 and said perforations being engageablewith a 3. Slot in cam 18 adapts said cam tooth to cam tooth and being adapted for the purretain its engagement with perforated plate pose of breaking the joint of a split rim and 20 when end of rim is lifted up for contracof overlapping one end of rim above the tion and expansion, projecting arms being 80 other and of forcing ends of said rim back rigid. or integral with clamp 12 between into joint. Said cam is provided with a slot which cam 18 pivots. vertically channeled, the purpose of said slot Perforated plate 20 is curved to fit the being to lower or raise said cam tooth acface of rim 10 and has one of its ends posicording to the elevation of end of rim lifted tioned under cam 18 with cam tooth in en- T 0 all whom it may concern: ings, 10represents a portion of a splitrim forations of the plate. 13 the other end of said plate, the sides are My invention consists further in certain cut away forming a flat neck. The cutting features of construction, arrangement, and away of said sides is for a. two-fold purpose. combination of parts which will be herein- First, it affords a flat neck projecting up- 40 after described and pointed out in the claim ward from face of rim 10, said neck posireference being had to the accompanying tions between jaws of said clamp 13. Said drawings in which neck has an eye to receive bolt 15 which Fig. 1 is a side elevation of my invention passes through apertured aws of clamp 13, as applied. Figs. 1, 2 and 3. Second, is to provide 45 Fig. 2 is a similar view showing ends of right angular shoulders to rest against the rim overlapped and held by a pawl. sides of said jaws of clamp 13, thus obviat- Fig. 3 is a comprehensive view of the ining a movement of said plate out of alignvention assembled off the rim. ment with cam tooth in the operation of Fig. 4 is another view of certain members contracting and expanding a demountable 50 which obviously would constitute an operrim. Through the action of lever nut 16, we able tool independent of other members if said plate 20 is held rigid tothe face of rim used on a split rim having perforations lat- 10. Thedevice is now in a rigid condition erally extending from end of rim not lift: except cam 18 which. pivots slidably on bolt ed up. 19, Figs. 1, 2 and 3. To operate the device, 55 Referring'more particularly to the drawcam lever is moved to the left by foot or up and retain its engagement with the peragement with perforation of said plate. 90 v hand (the cam tooth being in perforation of plate 20, Fig. 1) causing the end of rim to move apart, and as lever cam is moved further cam face being in engagement With end of plate 20, raisesone end of rim above the other and through the action of cam the ends of rim are overlapped. The cam'being slotted and slidably disposed on bolt 19, adapts cam tooth to engage with perforations of plate whereby the movement of lever cam ratchet-wise in the opposite direction causes an overlapping of the ends of rim Where they are retained in overlapped condition by pawl 21 for the removal of a tire from a rim and the replacement of a tire thereon, Fig. Release pawl 21 and move lever cam ratchet-Wise in the opposite direction and the ends of rim are forced back into lock, Fig. 1.

It will thus be seen that I providea simple, inexpensive and eiiicient tool for the removing of tires from demountable rims and replacing same thereon.

I claim:

In a rim tool of the class specified the combination with a clamp'to grip one end of a split rim and having rigid substantially right angular arms projecting normally over the other end of the split rim, and a second clamp to grip said other end of the split rim and having a perforated plate pivoted thereto, of a lever pivoted to the projecting arms and having a cam surface for raising one end of the rim radially, and a tooth engageable With the perforations of the plate for shifting the ends of the rim circnmferentially for the purpose specified.

JOHN BELL STROUD.

lVitnesses:

REBELLIA H. BRANDT STRoUI), ANNA M. BRANDT. 

